California’s governor issued the state’s first mandatory water restrictions amid a devastating four-year drought. California may only have a year’s worth of water left, and snowpack measurements for the year are set to hit record lows.

Governor Jerry Brown (D) made the announcement Wednesday at the Phillips snow course, near Sierra-at-Tahoe ski resort, during the state’s annual snow survey, where state officials measure the snowpack in the Sierra Nevada mountain range. Early data shows the snowpack in the range is lower than any year since 1950, and it was the first time in 75 years there was no snow at the Phillips location, which averages more than 66 inches on April 1, KTLA reported.

“Today we are standing on dry grass where there should be five feet of snow. This historic drought demands unprecedented action,” Brown said. “Therefore, I’m issuing an executive order mandating substantial water reductions across our state. As Californians, we must pull together and save water in every way possible.”